<?php
//人人商城 QQ:261753427
define('SERVICES_JSON_SLICE', 1);
define('SERVICES_JSON_IN_STR', 2);
define('SERVICES_JSON_IN_ARR', 3);
define('SERVICES_JSON_IN_OBJ', 4);
define('SERVICES_JSON_IN_CMT', 5);
define('SERVICES_JSON_LOOSE_TYPE', 16);
define('SERVICES_JSON_SUPPRESS_ERRORS', 32);

class Services_JSON
{
	function Services_JSON($use = 0)
	{
		$this->use = $use;
	}

	function utf162utf8($utf16)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
		}
		$bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
		switch (true) {
			case ((0x7F & $bytes) == $bytes):
				return chr(0x7F & $bytes);
			case (0x07FF & $bytes) == $bytes:
				return chr(0xC0 | (($bytes >> 6) & 0x1F)) . chr(0x80 | ($bytes & 0x3F));
			case (0xFFFF & $bytes) == $bytes:
				return chr(0xE0 | (($bytes >> 12) & 0x0F)) . chr(0x80 | (($bytes >> 6) & 0x3F)) . chr(0x80 | ($bytes & 0x3F));
		}
		return '';
	}

	function utf82utf16($utf8)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
		}
		switch (strlen($utf8)) {
			case 1:
				return $utf8;
			case 2:
				return chr(0x07 & (ord($utf8{0}) >> 2)) . chr((0xC0 & (ord($utf8{0}) << 6)) | (0x3F & ord($utf8{1})));
			case 3:
				return chr((0xF0 & (ord($utf8{0}) << 4)) | (0x0F & (ord($utf8{1}) >> 2))) . chr((0xC0 & (ord($utf8{1}) << 6)) | (0x7F & ord($utf8{2})));
		}
		return '';
	}

	function encode($var)
	{
		switch (gettype($var)) {
			case 'boolean':
				return $var ? 'true' : 'false';
			case 'NULL':
				return 'null';
			case 'integer':
				return (int)$var;
			case 'double':
			case 'float':
				return (float)$var;
			case 'string':
				$ascii = '';
				$strlen_var = strlen($var);
				for ($c = 0; $c < $strlen_var; ++$c) {
					$ord_var_c = ord($var{$c});
					switch (true) {
						case $ord_var_c == 0x08:
							$ascii .= '\b';
							break;
						case $ord_var_c == 0x09:
							$ascii .= '\t';
							break;
						case $ord_var_c == 0x0A:
							$ascii .= '\n';
							break;
						case $ord_var_c == 0x0C:
							$ascii .= '\f';
							break;
						case $ord_var_c == 0x0D:
							$ascii .= '\r';
							break;
						case $ord_var_c == 0x22:
						case $ord_var_c == 0x2F:
						case $ord_var_c == 0x5C:
							$ascii .= '\\' . $var{$c};
							break;
						case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
							$ascii .= $var{$c};
							break;
						case (($ord_var_c & 0xE0) == 0xC0):
							$char = pack('C*', $ord_var_c, ord($var{$c + 1}));
							$c += 1;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case (($ord_var_c & 0xF0) == 0xE0):
							$char = pack('C*', $ord_var_c, ord($var{$c + 1}), ord($var{$c + 2}));
							$c += 2;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case (($ord_var_c & 0xF8) == 0xF0):
							$char = pack('C*', $ord_var_c, ord($var{$c + 1}), ord($var{$c + 2}), ord($var{$c + 3}));
							$c += 3;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case (($ord_var_c & 0xFC) == 0xF8):
							$char = pack('C*', $ord_var_c, ord($var{$c + 1}), ord($var{$c + 2}), ord($var{$c + 3}), ord($var{$c + 4}));
							$c += 4;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case (($ord_var_c & 0xFE) == 0xFC):
							$char = pack('C*', $ord_var_c, ord($var{$c + 1}), ord($var{$c + 2}), ord($var{$c + 3}), ord($var{$c + 4}), ord($var{$c + 5}));
							$c += 5;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
					}
				}
				return '"' . $ascii . '"';
			case 'array':
				if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
					$properties = array_map(array($this, 'name_value'), array_keys($var), array_values($var));
					foreach ($properties as $property) {
						if (Services_JSON::isError($property)) {
							return $property;
						}
					}
					return '{' . join(',', $properties) . '}';
				}
				$elements = array_map(array($this, 'encode'), $var);
				foreach ($elements as $element) {
					if (Services_JSON::isError($element)) {
						return $element;
					}
				}
				return '[' . join(',', $elements) . ']';
			case 'object':
				$vars = get_object_vars($var);
				$properties = array_map(array($this, 'name_value'), array_keys($vars), array_values($vars));
				foreach ($properties as $property) {
					if (Services_JSON::isError($property)) {
						return $property;
					}
				}
				return '{' . join(',', $properties) . '}';
			default:
				return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS) ? 'null' : new Services_JSON_Error(gettype($var) . " can not be encoded as JSON string");
		}
	}

	function name_value($name, $value)
	{
		$encoded_value = $this->encode($value);
		if (Services_JSON::isError($encoded_value)) {
			return $encoded_value;
		}
		return $this->encode(strval($name)) . ':' . $encoded_value;
	}

	function reduce_string($str)
	{
		$str = preg_replace(array('#^\s*//(.+)$#m', '#^\s*/\*(.+)\*/#Us', '#/\*(.+)\*/\s*$#Us'), '', $str);
		return trim($str);
	}

	function decode($str)
	{
		$str = $this->reduce_string($str);
		switch (strtolower($str)) {
			case 'true':
				return true;
			case 'false':
				return false;
			case 'null':
				return null;
			default:
				$m = array();
				if (is_numeric($str)) {
					return ((float)$str == (integer)$str) ? (integer)$str : (float)$str;
				} elseif (preg_match('/^("|\').*(\\1)$/s', $str, $m) && $m[1] == $m[2]) {
					$delim = substr($str, 0, 1);
					$chrs = substr($str, 1, -1);
					$utf8 = '';
					$strlen_chrs = strlen($chrs);
					for ($c = 0; $c < $strlen_chrs; ++$c) {
						$substr_chrs_c_2 = substr($chrs, $c, 2);
						$ord_chrs_c = ord($chrs{$c});
						switch (true) {
							case $substr_chrs_c_2 == '\b':
								$utf8 .= chr(0x08);
								++$c;
								break;
							case $substr_chrs_c_2 == '\t':
								$utf8 .= chr(0x09);
								++$c;
								break;
							case $substr_chrs_c_2 == '\n':
								$utf8 .= chr(0x0A);
								++$c;
								break;
							case $substr_chrs_c_2 == '\f':
								$utf8 .= chr(0x0C);
								++$c;
								break;
							case $substr_chrs_c_2 == '\r':
								$utf8 .= chr(0x0D);
								++$c;
								break;
							case $substr_chrs_c_2 == '\\"':
							case $substr_chrs_c_2 == '\\\'':
							case $substr_chrs_c_2 == '\\\\':
							case $substr_chrs_c_2 == '\\/':
								if (($delim == '"' && $substr_chrs_c_2 != '\\\'') || ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
									$utf8 .= $chrs{++$c};
								}
								break;
							case preg_match('/\\\\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
								$utf16 = chr(hexdec(substr($chrs, ($c + 2), 2))) . chr(hexdec(substr($chrs, ($c + 4), 2)));
								$utf8 .= $this->utf162utf8($utf16);
								$c += 5;
								break;
							case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
								$utf8 .= $chrs{$c};
								break;
							case ($ord_chrs_c & 0xE0) == 0xC0:
								$utf8 .= substr($chrs, $c, 2);
								++$c;
								break;
							case ($ord_chrs_c & 0xF0) == 0xE0:
								$utf8 .= substr($chrs, $c, 3);
								$c += 2;
								break;
							case ($ord_chrs_c & 0xF8) == 0xF0:
								$utf8 .= substr($chrs, $c, 4);
								$c += 3;
								break;
							case ($ord_chrs_c & 0xFC) == 0xF8:
								$utf8 .= substr($chrs, $c, 5);
								$c += 4;
								break;
							case ($ord_chrs_c & 0xFE) == 0xFC:
								$utf8 .= substr($chrs, $c, 6);
								$c += 5;
								break;
						}
					}
					return $utf8;
				} elseif (preg_match('/^\\[.*\\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
					if ($str{0} == '[') {
						$stk = array(SERVICES_JSON_IN_ARR);
						$arr = array();
					} else {
						if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = array();
						} else {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = new stdClass();
						}
					}
					array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => 0, 'delim' => false));
					$chrs = substr($str, 1, -1);
					$chrs = $this->reduce_string($chrs);
					if ($chrs == '') {
						if (reset($stk) == SERVICES_JSON_IN_ARR) {
							return $arr;
						} else {
							return $obj;
						}
					}
					$strlen_chrs = strlen($chrs);
					for ($c = 0; $c <= $strlen_chrs; ++$c) {
						$top = end($stk);
						$substr_chrs_c_2 = substr($chrs, $c, 2);
						if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
							$slice = substr($chrs, $top['where'], ($c - $top['where']));
							array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
							if (reset($stk) == SERVICES_JSON_IN_ARR) {
								array_push($arr, $this->decode($slice));
							} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
								$parts = array();
								if (preg_match('/^\\s*(["\'].*[^\\\\\\]["\'])\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
									$key = $this->decode($parts[1]);
									$val = $this->decode($parts[2]);
									if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
										$obj[$key] = $val;
									} else {
										$obj->$key = $val;
									}
								} elseif (preg_match('/^\\s*(\\w+)\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
									$key = $parts[1];
									$val = $this->decode($parts[2]);
									if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
										$obj[$key] = $val;
									} else {
										$obj->$key = $val;
									}
								}
							}
						} elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
							array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
						} elseif (($chrs{$c} == $top['delim']) && ($top['what'] == SERVICES_JSON_IN_STR) && (($chrs{$c - 1} != '\\') || ($chrs{$c - 1} == '\\' && $chrs{$c - 2} == '\\'))) {
							array_pop($stk);
						} elseif (($chrs{$c} == '[') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
						} elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
							array_pop($stk);
						} elseif (($chrs{$c} == '{') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
						} elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
							array_pop($stk);
						} elseif (($substr_chrs_c_2 == '/*') && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
							$c++;
						} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
							array_pop($stk);
							$c++;
							for ($i = $top['where']; $i <= $c; ++$i) $chrs = substr_replace($chrs, ' ', $i, 1);
						}
					}
					if (reset($stk) == SERVICES_JSON_IN_ARR) {
						return $arr;
					} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
						return $obj;
					}
				}
		}
	}

	function isError($data, $code = null)
	{
		if (class_exists('pear')) {
			return PEAR::isError($data, $code);
		} elseif (is_object($data) && (get_class($data) == 'services_json_error' || is_subclass_of($data, 'services_json_error'))) {
			return true;
		}
		return false;
	}
}

if (class_exists('PEAR_Error')) {
	class Services_JSON_Error extends PEAR_Error
	{
		function Services_JSON_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null)
		{
			parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
		}
	}
} else {
	class Services_JSON_Error
	{
		function Services_JSON_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null)
		{
		}
	}
}